The invention provides a determination kit for lipoprotein (a), and relates to the technical field of medical biological detection. The kit comprises reagents R1 and R2, a calibration product and a quality control product, wherein the reagent R1 comprises trihytdroxy methyl-aminomethane, sodium chloride, polyethylene glycol-6000, biological preservative and surfactant, and the reagent R2 comprisestrihytdroxy methyl-aminomethane, goat anti-human lipoprotein (a) antibody latex particles, dibutyl methyl methylbenzene, glycine, dextran sulfate, biological preservative and surfactant. The kit adopts a latex turbidimetric inhibition immunoassay, latex reagent with a mixed particle size is used, a fully automatic biochemical analyser can be used to simultaneously detect a great quantity of samples, so that linearity is good, detection sensitivity, accuracy and accuracy can be improved, detection time is shortened, operation is simple, economic cost is low, and storage time is long.